Gentlemen, I have a bar stock
Ro-Jett .65 that's running perfectly,
but after many hundreds of flights,
it's getting brown and gummy.
It has run exclusively on Powermaster -
Ro-Jett fuel.
Usually, I would crock pot it in new,
green, antifreeze, but I'm concerned about
pitting the bar stock case or removing any
"good" cylinder varnish.
Should I just remove and clean the head?
What do you think?
Cheers! - K.